Sectional molder&#39;s flask



March 25, 1952 V MAYER 2,590,720

SECTIONAL MOLDERS FLASK Filed April 4, 1949 JNVENTOR. ROBERT 0. MAYER Patented Mar. 25, 1952 UNITED STATES PATENT OFFICE SECTIONAL MOLDERS FLASK Robert 0. Mayer, Cincinnati, Ohio Application April 4,

1 Claim. (Cl. 22106) This invention relates to molders flasks and more particularly relates to a sectional molders flask.

An object of this invention is to provide a molders flask having independent, or individual, and interchangeable side sections from which flasks of various sizes and shapes may be assembled.

A further object of this invention is to provide a clamp for a molders flask of the type referred to above, whereby adjacent side sections of an assembled flask may be firmly joined together.

A further object of this invention is to provide a sectional rectangular molders flask made up of interchangeable side sections which can be clamped together to form rectangular flasks of varying sizes and shapes.

A further object of this invention is to provide a sectional molders flask formed of side sections which can readily be stored in a small space.

A further object of this invention is to provide mold sections having co-operating lugs on adjacent sections about which a clamp can be fitted to hold the sections tightly in assembled relation.

A further object of this invention is to provide a sectional molders flask made up of four individual or separable sections each including a main panel and a pair of J-shaped lugs, a lug mounted at each end, each lug having a back extending from the main panel at an angle of 135 degrees so that when the sections are mounted with lugs back to back, c-shaped clamps can be fitted about the lugs and a rectangular flask is formed by the sections.

The above and other objects and features will in part be obvious and will in part be apparent from the following detailed description and the drawing, in which:

Figure 1 is a plan view, shown partly broken away and in section to reveal details of construction of a corner thereof;

,Fig. 2 is a view in section taken along a line II-II in Fig. l;

Fig. 3 is a viewin section taken along a line III-III in Fig. l; and

Fig. 4 is a view in section taken along a line IV-'IV in Fig. 1.

In the following detailed description and the drawing, like reference characters indicate like parts.

As shown in Fig. l a molders flask is formed of four identical flask sections each of which includes a main panel l2 and a pair of lugs l3 and M, one lug being provided at each end of the main panel. Each lug I4 is of generally J-shape 1949, Serial No. 85,360

while each lug l3 at the opposite end of the section is a mirror image thereof or of inverted J-shape. The lugs l3 and M are integral with main panel l2 and each lug has a long arm or 5 back l5 and an inwardly directed return bend or short arm 16. The back of each lug meets the main panel at an angle of 135 degrees thereto so that when flask sections are assembled the lugs of adjacent sections meet back to back with adjacent main panels extending at right angles.

The lugs of adjacent sections are held together. by clamps ll of generally C-shape which have return bent flanges I8 adapted to fit between the arms of lugs l3 and I4 so that each clamp can f t about and firmly grip the lugsof adjacent flask sections.

As shown in Fig. 2, inner faces of outer clamp arms l9 may be tapered in one direction and the abutting outer faces of the short arms N5 of the lugs may be tapered in the opposite direction so that as each clamp is forced down about a pair of lugs, the lugs are drawn or wedged together by the clamp, thereby firmly joining adjacent ends of two sides of the flask.

The outer ends of lugs l3 and M are beveled or mitred as indicated at 2| in Fig. 1 to provide a bolt hole between the ends of the lugs and the backs of the clamps, and bolts 22 inserted in the bolt holes are used to draw the clamps down tightly on the J-shaped lugs. For clarity, only .two of the bolts are shown in Fig. 1, but it is to be understood that a bolt may be located at each corner of the flask. As shown in Fig. 3, each bolt .22 carries a pair of enlarged washers 23 adapted to bear against the clamps and lugs so that when nuts 24 are tightened upon the bolts, the washers bear on the clamps and lugs to draw the clamps into place about the lugs.

As will be understood, flasks may be assembled by employing various combinations of flask "sides of different lengths by employing the lugs and clamps herein disclosed. Thus flasks of .various rectangular shapes and sizes can be formed using a small inventory of flask sides or sections.

When the clamps are removed, the flasks are disassembled and the sides can be stored according to size in a small space. a Each flask side or section may contain slots 21 50 of usual form in which sand strengthening flask bars of usual form may be positioned. In addition, each side section may include an exterior -.;pad 28 to which can be attached any conventional :gform of flask aligning device.

661 The invention described above and illustrated in the drawings is subject to structural modification without departing from the spirit and scope of the appended claim.

Having described my invention what I claim as novel and desire to secure by Letters Patent is:

An open-ended molders flask comprising four demountable sections, each of said sections including a flat enlongated main panel and a pair of attaching lugs, a lug being formed at each end of the main panel and integral therewith, each of said lugs including a back extending from the main panel at an angle of 135 degrees thereto and an integral inwardly directed return bend attached to the end of the back opposite the main panel and extending substantially parallel to and spaced from the back to form a slot between the back and the return bend, the backs of the lugs of adjacent sections being in abutting relation, whereby main panels of adjacent sections extend at right angles, four clamps, each of said clamps being of substantially C-shape and embracing the return bends of adjacent lugs, a pair of return bends integral with each clamp and extending inwardly of the clamp from and substantially parallel to'side' arms thereof, each return bend of the clamp extending into the slot between the return bend and back of one of the lugs, the lugs and clamp having complementary tapered surfaces extending crosswise of the slots, the tapered surfaces being in engagement to hold the lugs of adjacentsections firmly together in assembled rela- 4 tion to form a rectangular flask, there being a space formed between the back of each C-shaped clamp and the lugs of adjacent sections, four bolts, there being a bolt for each clamp, each bolt extending through one of said spaces, and a pair of pressure members carried by each bolt, said members being advanceable along the bolt, one of said members bearing on the lugs held by said clamp at one end of said clamp, the other of said members bearing on the other end of said clamp to urge the clamp crosswise of the lugs to hold the tapered surfaces in engagement.

' ROBERT O. MAYER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 487,851 Morris Dec. 13, 1892 526,113 Morris Sept. 18, 1894 571,427 Brown Nov. 17, 1896 1,002,708 Kreutzberg Sept. 5, 1911 1,063,318 Bartels June 3, 1913 1,252,489 Pearson Jan. 8, 1918 2,381,697 Shepard Aug. 7, 1945 FOREIGN PATENTS Number Country Date 212,710 Germany Aug. 9, 1909 

